5.7X28MM
Compare prices
1 offer · 0 in stock · sorted by best price| Retailer | Price | Stock | Last checked | Deal |
|---|---|---|---|---|
| East Valley Tactical | $1,519.33 | Out of stock | 20m ago | Go to deal |
Prices and stock are from each retailer's latest check and can change. Price Dope may earn a commission from retailer links. Disclosure
Description
The Banshee 300 is the lightest and most compact AR pistol firearm. It features 7075-T6 aluminum receivers, single-stage trigger, CMMG ambidextrous safety selector, and a CMMG ambidextrous charging handle. The barrel has a nitride finish. The Banshee 300 also has a M-Lok free-float handguard and Cerakote finish. This MK57 model features an 5" medium taper barrel, Magpul MOE grip, CMMG 6 position RipBrace, integrated trigger guard, and a 20-round Pro Mag magazine.
Specs
| Brand | Cmmg |
|---|---|
| Category | Pistol · Firearms |
| Caliber | 5.7X28MM |
| UPC | 00816422025312 |
| Capacity | 20 |
| Weight | 4.7 lb |
| Oal | 19.20" |
| Hand | Right |
| Type | AR Pistol |
| Color | Graphite Black Cerakote |
| Grips | Black Magpul MOE |
| Model | Banshee 300 |
| Twist | 1:9" |
| Action | Semi-Auto |
| Finish | Colored |
| Muzzle | Threaded |
| Safety | Ambidextrous |
| Series | MK57 |
| Sights | None, Optic Ready |
| Trigger | Single-Stage |
| Grip_type | CMMG RipBrace |
| Handguards | M-LOK Free Float |
| Stock_type | Pistol Stabilizing Brace |
| Barrel_type | 1:9 |
| Finishcolor | Graphite Black Cerakote |
|---|---|
| Frame_color | Black |
| Slide_color | Black |
| Metal_finish | Black Cerakote/Black Nitride |
| Stock_finish | Black |
| Weight_range | 4 lbs to 4.99 lbs |
| Barrel_finish | Black Nitride |
| Barrel_length | 5" |
| Grip_material | Polymer |
| Similar_items | HG5728 |
| Frame_material | Aluminum |
| Stock_material | Synthetic |
| Thread_pattern | 1/2"-28 tpi |
| Type_of_sights | None |
| Receiver_finish | Graphite Black Cerakote |
| Weight_in_ounces | 70 |
| Receiver_material | 7075 T6 Aluminum |
| Stock_description | CMMG 6 Position RipBrace |
| Barrel_description | 4140 Chrome Moly Medium Taper |
| Barrel_length_range | 5" to 5.99" |
| Type_action_function | Semi-Auto |
| Barrel_length_in_inches | 5 |
| Number_of_magazines_included | 1 |
| Package dimensions | 3.3 x 28.65 x 11.3 in |
D.O.P.E.Price history
Lowest price across connected retailers, from every price check we've recorded.
- Current best
- $1,519.33
- Low
- $1,519.33 Oct 8, 2026
- High
- $1,519.33 Oct 8, 2026
- Tracking since
- Oct 8, 2026
One price check so far ($1,519.33 on Oct 8, 2026). The chart fills in as retailers are re-checked.
Recent price checks (1)
| Date | Retailer | Price | Stock |
|---|---|---|---|
| Oct 8, 2026, 5:15 PM PT | East Valley Tactical | $1,519.33 | Out of stock |
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